Investigations in the hygiene of reading
By: by James Herbert Blackhurst ...
Publisher: Warwick and York
Published: 1927
Place of publication: Baltimore
Language: eng
Number of pages: 63
Subjects: Reading -- Study and teaching; Psychology -- Experimental and physiological; Type and type-founding
Notes: A study of 312 elementary school readers published since 1860 for the purpose of determining what has been the trend of their typography.  cf. p. 25.

Bibliography: p. 62-63.